In order to use the HDR features, it is necessary to have a brachytherapy or GammaKnife machine setup for your account. To request a new page navigate to the Manage Sites and Machines Page and click the Request new site/machine button. Certain functions such as attaching sources, exchanging sources and other source management activities are only accessible to users with Physicist Administrator or account owner credentials. Performing HDR or GammaKnife QA may be done by any therapist or physicist roles if authorized when creating the QA template.